Sally and Marta had the same number of postcards. After Sally sold 18 of her postcards, Marta had 4 times as many postcards as Sally. How many postcards did each girl have to begin with?

Answer 1

4(x-18)=x
4x-72=x
3x=72
x=72/3
x=24

Answer 2

First multiply 18 by 4 it equals 72.

Divide 72 by 3 and you get your answer ( the answer is 24

Answer 3

Ew, that doesn’t make sense why are you dividing by 3???

Answer 4

thanks for helping me :)

Answer 5

Thanks!